nbzic blocks needing entropy

Hi, all,

I was just building netbsd-10 on a newly installed system, and I noticed 
this:

[  9118.722449] entropy: pid 9063 (nbzic) blocking due to lack of entropy

root     9063  0.0  0.0 22472   3472 pts/0 IN    7:33AM 0:00.03 
/usr/src/../tools/bin/nbzic -d 
/usr/src/../obj-amd64/external/public-domain/tz/share/zoneinfo/builddir -L 
/dev/null africa antarctica asia australasia europe northamerica 
southamerica etcetera backward factory

The man page for zic is... well, it's different, but I don't see any 
functions it'd do that'd need randomness. OTOH, lib/libc/time/zic.c shows 
randomness is used for creating temp files.

While people won't usually install a system, then immediately use it to 
compile without fully setting it up, I wonder if this use of random is a 
bit superfluous, or if at very least it should use non-blocking random?

John